Rotary cutter for woodwork



(No Model.)

0. E. ZIMMERMANN.- ROTARY'OUTTER FOR WOODWORK.

Patented Nov. 15, 1892.

WITNESSES: f INVEVNTOR: 'OaW 1W W W ATTORN EYS.

UNITED STATES PATENT OFFICE.

CHARLES E. ZIMMERMANN,

OF SYRACUSE, NEW YORK.

ROTARY CUTTER FOR WOODWORK.

SPECIFICATION forming part of Letters Patent No. 486,269, dated November 15, 1892.

Application filed April 1, 1891.

To all whom it may concern:

Be it known that I, CHARLES E. ZIMMER MANN, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in R- tary Cutters for \Voodwork, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention has reference to rotary planers designed for cutting ornamentations in the surface of wooden bars or boards crosswise of the grain thereof.

The object of the invention is to provide a planer which shall be capable of forming simultaneously a series of ornamentations'in a broad strip across the surface of the wood and shall have its cutter-heads of such a form that by applying them to the arbor contiguously side by side they become self-adj ustin g to their requisite positions for formingaseries of contiguous ornamentations; and the object of the invention is also to render the several cutters conveniently accessible for grinding them individually; and to that end theinvention consists in the novel construction and combination of parts hereinafter described, and specifically set forth in the claims.

In the annexed drawings, Figure 1 is a face View of a series of my improved cutter-heads mounted on the arbor of the planer. Fig. 2 is a transverse section on line 2 .2, Fig. 1. Fig. 3 is an enlarged end view of one of the cutter-heads provided with a bevel-cutter. Fig. 4 is a detached plan view of said bevel'cutter. Fig. 5 is a sectional view on line y, Fig. 2; and Fig. 6 is a sectional view on line 00, Fig. 2.

Similar letters and figures of reference indicate corresponding parts.

A represents the rotary arbor of the planer, and O and 0 denote my improved cutterheads, a pluralityof which are rigidly mounted on the arbor and disposed contiguously side by side. Each of said cutter-heads is formed with two arms 0" O", to the free ends of which the cutters are attached. In order to permit said arrangement of the cutterheads on the arbor and at the same time bring the cutters of each in a path contiguous to those of the adjacent cutter-heads, the two arms 0 O" of each cutter-head are dis- Serial 110,387,207. (No model.)

posed diametrically opposite each other, and said cutter-head is placed in such a position on the arbor as to bringits arms intermediate of those of the adjacent cutter-head, as best seen in Fig. 2 of the drawings. The arms 0" O are of the same width in a direction parallel with the arbor as the hub portion of the cutter-head, and the cutters which are attached to the ends of the arms 0" C are of the same width as said arms. Hence by slipping the cutter-heads onto the arbor and setting them contiguously side by side they adjust themselves in their requisite positions to cause the cutters of each cutter-head to form an extension of the ornamentation produced in the surfaces of the wood by the cutters of the adjacent cutter-head, as represented in Fig. 1 of the drawings. The convex portions 1 1 of the ornamentation are formed by the cutters D D, which project from the fronts of the arms. and are provided with attaching-shanks D .D' nearly at right angles to the cutters, by which shanks the cutters are seated on the sides of the arms 0 O", facing in the direction in which the cutterhead turns, as shown in Fig. 2 of the draw ings. The shanks D D are each provided with an eye for the reception of the bolt b, by which the cutter is secured to the cutter-head. To sustain the cutter inthe line in which it is to operate, I provide the arm 0" with screwthreaded sockets e e in opposite sides and with recesses e e surrounding said sockets. Into these sockets I insert set-screws s s, the heads of which engage opposite edges of the cutter-shank and are adapted to enter said recesses, and thus atford greater range of adjustment to the screws, as clearly shown in Fig. 5 of the drawings. By the employment of the single attaching-bolt b the attachment and detachment of the cutterD are facilitated. The alignment of said cutter is effected by the set-screws s 8, bearing with their heads against the oppositeedges of the cutter-shank.

To insure sharp outlines between the sections of the ornamentation produced in the surface of the wood, I attach to the back of the arm 0 chisels or knives F F, which are formed with V-shaped longitudinal edge and are each seated by one of said edges in one of the correspondingly-V-shaped grooves a, formed in the back of the arm 0. Upon the attaching-shank of said cutter is placeda cap 0, provided with similar V-shaped grooves c c for the reception of the edges of knifeshanks, and through this cap and into the arm 0" is inserted a tap-bolt c". Said attaching devices permit the knives F F to be readily removed from the cutter-head when required for grinding or renewing the said knives.

For forming the bevels 2 2 in the surface of the wood I attach to the sides of the cutter-head arms 0 C the knives I I, which are beveled from said sides.

B B represent the cutters which fo m the ogee-part 3 of the ornamentation.

Iform the ogee-cutter in one piece to produce a smooth cut, and I grind the cuttingedge thereof in such a manner as to cause the deepest-cutting portidn to stand back of the other portions of the cuttingedge and emerge lastfrom the wood, thereby obviating the liability of sliveri'ng the wood. To produce a clean sharp cut at the opposite edge of the cutter, I attach to said edge a knife cl, which stands with its cutting-edge at right angles to the axis of the cutter-head and is set into a dovetailed groove (1 in the edge of the cutter B, so as to be flush therewith, as Shown in Fig. 6 of the drawings. Said knife is held in the groove by the set scr'ew f, which is inserted into a screw-threaded socket f in the side of the cutter adjacent to the groove cl. The back of the screw-head being beveled and bearing on the beveled edge of the cutter crowds the said cutter laterally in the groove cl and binds it therein, as clearly shown in Fig. 6 of the drawings.

In case the ornamentation to be produced in the wood is to have blank spaces 4 4 interspei'sed the spacing-collars 'i 2' are to be interposed between the cutter-heads at said spaces.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

, 1. The combination of the ogee cutter formed in one piece and provided with the dovetailed groove d and a screw-threaded socket at the side of said groove, the knife (1', set into said groove, and the set-screw f, inserted in the socket and confining the knife in the groove, as set forth.

2. The combination of the cutter-head formed with the arms 0" C and with the V- shaped grooves a a in opposite sides of the rear portion of the arms, the knives F F, I

formed with V-shaped edges andseated thereby in the aforesaid grooves, the cap 0, provided with similar grooves c c, the bolt 0", fastening said cap to the knives and cutt'e'r head, and the cutters D D, projecting from the front of the arms, substantially as described and shown. H

3. The combination, with the cutter-head C, formed with the arm 0, of the main cutter D, formed with the shank D and secured thereat to the front of said arm, and the supplemental cutter I, attached to the side of the arm 0'' and having its cutting-edge inclined outward from the line of cutting of the aforesaid main cutter, substantially as described and shown.

In testimony whereof I have hereunto signed my name this 24th day of March,1S9l.

CHARLES E. ZIMMERMANN. [11.8.]

Witnesses:

MARK W. DEWEY, C. L. BENDIXON. 

